Disk plow and the like



S. YUASA.

DISK PLOW AND THE LIKE. v APP'uc/mon FILED MAY 6. |920.

Patented Mar. 1, 1921.

2 SHEETSSHEET l- A TTORNEYS.

S. YUASA.

DISK PLOW AND THE LIKE.

APPLlcAloN FILED MAY 6, 1920.

1,370,079, v Patented Mar. 1, 1921.

2 SHEETS-SHEET 2.

EIII I ATTORNEYS.

IN VEN TOR.

unirsi) sraras p SHINKIQHI YASA, OiF CUPERTINO, CALIFORNIA;

msx rLow AND'THE Linn. Y

Specification of Letters Patent. Patented Mar. 1, 192,1.

Application filed May 6, 1920. Serial No. 379,349.

To atl 10h-0m t may concern:

Be it known that I, SHINKICHI YUAsa, a subject of the Emperor of Japan, residing atV Cupertino, inthe county of Santa Clara and State of California, have 'invented .new and useful Improvements in Disk Plows and the like, of which the following 'is a specification.

My invention relates to agriculture implements and has reference more particularly to an improvement in disk plows and the like.

As heretofore practised, disk plows are usually arranged 'in gang formation on a ysuitable frame or carriage and towedbehind a tractor or other towing machine. In Fusingian implement ofthis kind, considerable inconvenience is experienced, and in some instances it is impossible to make a furrow close around trees and other obstructions, andalso along ,fence lines and in fence corners, as the disks do Vnot ex? tend far enoughV out from the frame or carriage which -carry them nor are they capable of sufficienty horizontal angular adjustment. j

According ,to Vthe principal involved in the present case I propose to provide a socalled auxiliary disk which I prefer to mount upon the frame Vwhich carries the plow disks in Vsuch a manner that it may be manipulated to assume various horizontal angular positions relative to the frame and thusY realize a practical advantage in turning a' furrow close to fences, fence corners and other Vplaces Ynot'ordinarily effected by the conventional types of such implements.

In the accompanying drawings I have illustrated a construction which may be adopted in carrying out the invention. InV

said drawings Figure 1 is a plan view showing the application of the invention; Fig. 2 is a side elevation; Fig. 3 is a plan view of the clamping jaws for receiving the frame, and Fig. 4 is a plan View of the pivotal mounting for the arm which carries the auxiliary .disk and showing the stop for limiting the movement ofthe disk in one direction. z'

Referring now to the drawings in detail: As an example of the use of the invention, I will first refer to Fig. 1 which clearly shows the relative position of the device to the beam 1 of the frame which carries a plurality of disk-plows 2, only one of which adapted to be towed vwith the curvature.y of the disks 2 presented toward the axis of the line of draft the auxiliary disk A should normally be likewise presented so `that it toomay act to produce a furrow co-incidin g to the furrows producedv by the other dlsks.A V'This so-called normal position of the auxiliary disk A should be accounted for when plowing in amore or less straight line -and to realize this condition I propose to provide a pair of horizontal clamping jaws B and C the "formerjhaving a fixed'mounting on the end of the threaded standard D and theiother having an opening"` adjacent its end made to receive the standard and on `whichit is carried with freedom of vertical movement so that the beam l may be engaged between their confronting serrated gripping ends. In clamping'the beam between the jaws the standard D `is equipped with a threaded collar E which carries Va toothed disk F with a keeper Cr also connected to'` the collar and the top jaw B. As thus provided the jaw B is practically a part of the collar E and with it is adapted to assume various 4verticalpositions on the standard. nut lock also carried by the standard above the colis shown. Considering the plow frame as y lar E maybe used for locking the jaws in clamping position.k Coperating with this nut lock in maintaining thejaws locked, is a dogging device I which is carried on top ofthe jaw Bandadapted to engage the teeth of thejdiskiF. To stillfugrtherhold the opposite side of thebeam l from theA standard D. The clamping effect of these strips may be regulated by the nuts which engage the threaded ends of the rod.

Carried by the standard D above the structure just defined and by means of the split sleeve L is a yoke like 'structure con- Sistine' of the horizontal members yM and N. The members being spaced one above the other to form a supportingV bearing for the Vertical shaft O of the cone gear P, the circumference of which having sprocket teeth for accommodating the sprocket chain Q which passes around the gear, the purpose of which will be presently mentioned. The outer end of the member N is made in the shape vof an L to increase the space between it and the member M so as to provide a pair of supporting bearings R and S for the shaft T of the sleeve U which is confined on the shaft with freedom of rotation. Constructed as a part of this 'sleeve U is the horizontal arm V which terminates in a slightly curved downwardly presented suspension WV for vthe disk A which is carriedwith freedom of rotation, therebyby the bearing X made to receive the axle Y of the ydisk. l

Arranged on the top side of the arm V and in substantially the same plane as the gear P is a sprocket gear around which the sprocket Q, passes'.

Positioned at any vconvenient place for manual manipulation is a hand wheel A1 having a rod B1 to which it is fixed with the rod supported in a bearing C1 adjacent the gear P. end of the rod is adapted to mesh with the gear l? so that by turning the hand wheel A1 vin either a clockwise or anticlockwise direction the arm V together with the disk A may be moved in a horizontal plane with the motion imparted vthrough the sprocket Q. lVith this construction it will be readily seen how the position of the disk A relative to the plow frame which carries it may be moved -to assume various horizontal angular adjustments for instance it may be moved toward or away'from the plow frame as occasion demands for producing a furrow in places not accessible to the disk carried by the frame.

vAs it willbe impractical to move the disk A beyond 'a certain degree forward, a suitablefstop is provided for this purpose. This stop may comprise a block El fixed on the A pinion D1 mounted on the side of the arm B by suitable bolts F1 with a linger or lug G1 carried by the sleeve U and made to abut against the block for limiting the movement of the army V. In some instances it may be necessary to perlmit the disk to swing forward a given desame features are also to be had by determining the position of the engagement of the aws D and C on the beam l.

I claim:

A disk plow having detachable means for engaging a suitable towing medium, said detachable means comprising a pair of clamping jaws, a standard Aon which said. jaws are mounted, means on the standard for effecting a clamping action of the jaws, a pair of spaced horizontally disposed members having a split clamping sleeve engaging said standard and capable of a vertical or lateral adjustment relative thereon, said lhorizontally spaced members providing supporting bearings for a shaft, a sleeve mounted on said shaft'with freedom of movement thereon, an arm connected to said sleeve having a downwardly presented end to which the plow disk is mounted, an axle also supported by said horizontally spaced members, a sprocket gear on said shaft, a second sprocket gear on said arm, a sprocket connecting said gears, and means for rotating the first named gear and imparting a swinging movement to said plow disk through said sprocket. Y

SHINKICHI YUASA. 

